Answer:
The information we have is:
The boat can hold 170 L of fuel
The boat uses 34L each hour.
With this information, we can find the total amount of time that the boat can be used.
If the boat is used x hours, then it needs:
x*34L of fuel.
And the maximum amount of fuel that the boat can use uis170 L
Then we can solve:
x*34L = 170L
Now we can divide both sides by 34L to isolate x.
x = 170L/34L = 5
This means that the boat can be used for 5 hours.